Browsing by Author "Makhubela, Banothile Charity Events"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Open Access
    The design, synthesis and characterization of polynuclear materials for applications for catalysis
    (2012) Makhubela, Banothile Charity Events; Smith, Gregory S; Jardine, Anwar
    The synthesis and characterization of new chitosan- and 6-deoxy-6-amino chitosan-supported ligands is discussed. This was achieved via the reaction of either 2-pyridinecarboxaldehyde or 2-(diphenylphosphino)benzaldehyde with the accessible amino groups of chitosan to afford chitosan-supported Schiff base ligands (2.1-2.4) bearing iminopyridyl and iminophosphine functionalities on the surface. Complexation reactions with [PdCl2(COD)] and [RhCl(CO)2]2 gave the corresponding chitosan-supported complexes (2.5-2.8) and (2.13-2.14). These metal-containing materials and their precursors were isolated as air and moisture stable solids which proved insoluble in common organic solvents and have been characterized analytically and spectroscopically...
  • Thumbnail Image
    Item
    Open Access
    The synthesis, characterization and reactivity of metallacycloalkanes and their precursors
    (2008) Makhubela, Banothile Charity Events; Moss, John R; Smith, Gregory S
    The synthesis and characterization of a series of new osmium(ll)dibromido complexes of the type [(116-Ar)OsLBr2] (Ar = p-cymene and C6Me6, L = phosphines, phosphites and CO) have been carried out successfully. The complexes were obtained in good yields and characterized by 1 Hand 31 P NMR spectroscopy and elemental analysis. The dibromido complexes were then used in the preparation of osmium bis(alkenyl) and osmacycloalkane complexes.